http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-569770-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bca783ecfc8b60246366f2bbf1d72bcf http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_caf42e0fedd50ea137af678ab4925aa6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B33-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B33-10 |
| filingDate | 1943-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1945-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-569770-A |
| titleOfInvention | Diazo dyestuffs |
| abstract | Disazo dyes are made by coupling one molecular proportion of a diazotized monoamine of the benzene series, carrying, in the p-position to the amino group, a group X-CO-NY-(wherein X represents a monochloro- or monobromo-alkyl radical of one, two or three carbon atoms and Y represents a hydrogen atom, an alkyl group of not more than six carbon atoms or a cycloalkyl group) and, optionally, substituents such as alkyl, alkoxy and halogen, but devoid of hydroxy, sulpho, aminosulphonyl and sulphane groups, with 1-amino-8-naphthol-4-sulphonic acid or with 1-amino-8-naphthol-3 : 6- or 4 : 6-disulphonic acid in acid medium, and coupling in alkaline medium with the resulting monoazo compound, one molecular proportion of a diazotized monoamine of the benzene or naphthalene series, which may be substituted, but is devoid of halogenoacylamino groups. The components are so chosen that the final dyestuff does not contain more than three sulphonic acid groups. The products are suitable for dyeing animal fibres, wool being specified. In examples, the production of the following dyestuffs is described: 4-amino-1-N-cyclohexyl-o -chloroacetanilide --> (acid) H acid (alkaline) \sM aniline; the aniline may be replaced by m-nitroaniline, N-benzoyl-N-ethyl-p-phenylene diamine or m-aminobenzene sulphon-N-ethylanilide; 4-amino-o -chloropropionanilide --> (acid) S acid (alkaline) \sM 4-aminoacetanilide; 4 - amino - 1 - N -ethyl-o -chloroacetanilide --> (acid) H acid (alkaline) \sM 4-aminoacetanilide; 4-amino-1-N-cyclohexyl-o -chloroacetanilide --> (acid) K acid (alkaline) \sM p-aminophenylmethylsulphone. A table showing the shades produced on wool by various other combinations is given, and the following additional components are specified: (i) for coupling in acid medium: 4-amino-1 - N - ethyl - or cyclohexyl - o - chloropropionanilide; 4-amino - 1 - N - iso - propyl- or n-butyl-o -chloroacetanilide, 4 - amino - 1 - N - ethyl- or cyclohexyl-o -bromoacetanilide and 5-amino-2-N-cyclohexyl-o -chloroacet-toluidide; (ii) for coupling in alkaline medium: o-anisidine, 2.5-dichloroaniline, p-aminobenzenesulphonamide, p-sulphanilic acid, 5-chloro-2-toluidine, p-naphthionic acid, 4-chloro-2-aminodiphenyl ether, 4-amino-1-N-cyclohexyl-acetanilide, 41-amino-11-N-cyclohexylbenzanilide, m-aminobenzene-sulphon - o - anisidide, m - aminoacetophenone, p-nitraniline, 41-amino-11-N-ethylbenzanilide, 4- or 3-aminobenzoyl-N-ethyl-a -naphthylamine and 4-amino-1-N-cyclohexyl-N-phenoxyacetylaminobenzene. The Provisional Specification includes also the use in the manufacture of the dyestuffs, of any 1-amino-8-naphthol sulphonic acid having the 2- and 7-positions free. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1247511-B |
| priorityDate | 1943-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.